diff --git a/run_config/fvp-linux.sgi b/run_config/fvp-linux.sgi
index cdc1104..31c1544 100644
--- a/run_config/fvp-linux.sgi
+++ b/run_config/fvp-linux.sgi
@@ -17,8 +17,12 @@
 }
 
 generate_lava_job_template() {
-	uart="0" file="trusted-firmware-sgi.exp" track_expect
-	uart="1" timeout="1800" set_primary="1" file="linux-busybox-sgi.exp" track_expect
+	uart="0" port="5002" file="trusted-firmware-sgi.exp" track_expect
+	uart="1" port="5003" file="linux-busybox-sgi.exp" timeout="1800" \
+		set_primary="1" track_expect
+
+	set_uart_port "${archive:?}" 2 5000
+	set_uart_port "${archive:?}" 3 5001
 
 	payload_type="linux" gen_fvp_yaml_template
 }
diff --git a/run_config/fvp-linux.tc b/run_config/fvp-linux.tc
index b309a32..c4109c4 100644
--- a/run_config/fvp-linux.tc
+++ b/run_config/fvp-linux.tc
@@ -110,8 +110,12 @@
 
 generate_lava_job_template() {
 	# Hold scp terminal_s0
-	uart="0" file="hold_uart.exp" track_expect
-	uart="1" set_primary="1" file="linux-rd-busybox.exp" track_expect
+	uart="0" port="5002" file="hold_uart.exp" track_expect
+	uart="1" port="5003" file="linux-rd-busybox.exp" set_primary="1" \
+		track_expect
+
+	set_uart_port "${archive:?}" 2 5000
+	set_uart_port "${archive:?}" 3 5001
 
 	payload_type="linux" gen_fvp_yaml_template
 }
diff --git a/utils.sh b/utils.sh
index cbf6805..ead6ce7 100644
--- a/utils.sh
+++ b/utils.sh
@@ -366,6 +366,26 @@
 	get_uart_env "${1:?}" "${2:?}" port "${3-${default}}"
 }
 
+# Set a UART environment variable.
+#
+# UART environment variables are the UART-specific environment variables
+# configured by the CI's test configuration.
+#
+# Usage: set_uart_env <archive> <uart> <variable> <value>
+set_uart_env() {
+	local path="$(get_uart_env_path "${1:?}" "${2:?}")"
+
+	mkdir -p "${path}" && \
+		echo "${4:?}" > "${path}/${3:?}"
+}
+
+# Set the FVP port for a given UART.
+#
+# Usage: set_uart_port <archive> <uart> <port>
+set_uart_port() {
+	set_uart_env "${1:?}" "${2:?}" port "${3:?}"
+}
+
 # Make a temporary directory/file insdie workspace, so that it doesn't need to
 # be cleaned up. Jenkins is setup to clean up workspace before a job runs.
 mktempdir() {